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    • 93. 发明申请
    • OPTICAL DISC DEVICE AND OPTICAL INFORMATION RECORDING METHOD
    • 光盘设备和光信息记录方法
    • US20090147652A1
    • 2009-06-11
    • US12325428
    • 2008-12-01
    • Goro Fujita
    • Goro Fujita
    • G11B7/00
    • G11B7/0045G11B7/0938G11B7/0956G11B2007/0009
    • An optical disc device that irradiates a light beam on an optical disc having a recording layer in which information is recorded and a positioning layer in which tracks for specifying a recording position of the information in the recording layer are provided includes an information recording unit that irradiates a light beam for information on a target position in the recording layer to record the information by shifting a position in an optical axis direction of the light beam for information, a terminal-end recognizing unit that recognizes, when new information is recorded in a recording layer having a recorded area in which information is already recorded, a terminal end of the recorded area, and a target-position setting unit that sets the target position to separate the terminal end of the recorded area and a start end of a recording planned area in which information is recorded anew.
    • 一种光盘装置,其将光束照射在具有记录信息的记录层的光盘上,并且具有用于指定记录层中的信息的记录位置的轨迹的定位层包括:信息记录单元, 用于通过移动用于信息的光束的光轴方向上的位置来记录信息以记录信息的光束,终端识别单元,当新信息被记录在记录中时,识别 具有已经记录信息的记录区域,记录区域的终端以及目标位置设定单元,其设定目标位置以分离记录区域的终端和记录计划区域的开始端 其中重新记录信息。
    • 94. 发明申请
    • OPTICAL DISC REPRODUCTION METHOD AND DEVICE, AND OPTICAL DISC MANUFACTURING METHOD
    • 光盘再现方法和设备,以及光盘制造方法
    • US20090052310A1
    • 2009-02-26
    • US11718345
    • 2005-10-24
    • Seiji KobayashiGoro Fujita
    • Seiji KobayashiGoro Fujita
    • G11B7/00
    • G11B20/12G11B7/005G11B7/00736G11B20/1217G11B20/1426G11B20/18G11B27/24G11B2020/1221G11B2020/1272G11B2020/1278G11B2020/1287G11B2020/1288G11B2020/1836G11B2220/2541
    • According to the present invention, there is provided an optical disc player adapted to record a unique ID on a read-only optical disc and positively read the unique ID from the optical disc. The optical disc (1) played with this player has a specific physical cluster in which the unique ID is to be recorded. The optical disc (1) used herein is normally molded by a molding machine using a molding die. Thereafter, a unique ID is generated for each of the optical discs (1), and high-power laser light is irradiated to a specific land in the specific physical cluster correspondingly to the bit value of the unique ID to transit the land to a pit. The physical cluster has provided therein a first area where each bit in the unique ID is recorded by the lasering in case the bit value is 0 and a second area where each bit in the unique ID is recorded by the lasering in case the bit value is 1. At the time of playback, the number of errors in the first area is compared with that in the second area to determine the value of each bit in the unique ID.
    • 根据本发明,提供了一种适于在唯一光盘上记录唯一ID并且从该光盘中正确读取唯一ID的光盘播放器。 用该播放器播放的光盘(1)具有要记录唯一ID的特定物理群集。 本文使用的光盘(1)通常由使用成型模的成型机成型。 此后,为每个光盘(1)生成唯一的ID,并且高功率激光对应于唯一ID的位值照射到特定物理簇中的特定区域,以将土地转移到坑 。 物理簇在其中提供了第一区域,其中在位值为0的情况下,通过激光记录唯一ID中的每个位,并且在比特值为0的情况下通过激光记录唯一ID中的每个比特的第二区域 在回放时,将第一区域中的错误数量与第二区域中的错误数量进行比较,以确定唯一ID中每个位的值。
    • 95. 发明授权
    • Domain wall displacement detection system magneto-optical recording medium and its manufacturing method
    • 畴壁位移检测系统磁光记录介质及其制造方法
    • US07433276B2
    • 2008-10-07
    • US10864395
    • 2004-06-10
    • Takeshi MikiGoro Fujita
    • Takeshi MikiGoro Fujita
    • G11B11/00
    • G11B11/10584G11B7/24082G11B11/10515G11B11/10578G11B11/10582
    • A domain wall displacement detection (DWDD) system magneto-optical recording medium forms a land 3 and a groove 4 as signal recording areas. When a domain wall displacement improvement is changed by irradiating annealing light La on a boundary wall surface 5 between the land 3 and the groove 4, the position of this annealing light is detected by an annealing light scanning position displacement detecting wobbling portion 7 formed at a portion extending along the recording track length direction of the boundary wall surface 5. The annealing light scans this wobbling portion 7, whereby a vibration amplitude of a cycle corresponding to the cycle of the wobbling portion 7 is produced to thereby detect and monitor the miniscule change of the scanning position of the annealing light with high sensitivity. Thus, in the DWDD system magneto-optical recording medium, the scanning position of the annealing light at the boundary wall surface between the land 3 and the groove 4 can be detected with high sensitivity.
    • 域壁位移检测(DWDD)系统磁光记录介质形成作为信号记录区域的平台3和凹槽4。 当通过在焊盘3和槽4之间的边界壁表面5照射退火光La来改变畴壁位移改进时,该退火光的位置通过形成在第一焊盘的退火光扫描位置检测摆动部分7 部分沿着边界壁表面5的记录轨道长度方向延伸。 退火光扫描该摆动部7,由此产生与摆动部7的周期对应的周期的振动幅度,从而以高灵敏度检测并监视退火光的扫描位置的微小变化。 因此,在DWDD系统磁光记录介质中,可以高灵敏度地检测焊盘3与槽4之间的边界壁表面处的退火光的扫描位置。
    • 99. 发明授权
    • Recording medium driving device for rotationally driving a disk-shaped recording medium having tilt detection means and tilt detection method
    • 用于旋转驱动具有倾斜检测装置和倾斜检测方法的盘形记录介质的记录介质驱动装置
    • US06526007B1
    • 2003-02-25
    • US09762680
    • 2001-03-16
    • Goro Fujita
    • Goro Fujita
    • G11B700
    • G11B7/00718G11B7/007G11B7/0938G11B7/0956
    • An optical disc reproducing device 10 has an optical pickup 11 for reading out digital data recorded on an optical disc, an amplitude detection circuit 18 for detecting the amplitude of a wobble component signal passed by a band pass filter 14, and a tilt detection, target value setting and drive signal generation circuit 23 for carrying out detection of the tilt quantity. In the optical disc reproducing device 10, a laser beam is cast by the optical pickup 11 onto an optical disc having a recording area with its one sidewall wobbled in a predetermined cycle, then the amplitude of each wobble component signal based on a return light in the case where the laser beam is located on the inner circle side or the outer circle side on the optical disc than the wobbled portion is detected by the amplitude detection circuit 18, and the differential value of the amplitude of the respective wobble component signals is found as a tilt indication value by the tilt detection, target value setting and drive signal generation circuit 23.
    • 光盘再现装置10具有用于读出记录在光盘上的数字数据的光学拾取器11,用于检测由带通滤波器14通过的摆动分量信号的幅度的振幅检测电路18和倾斜检测目标 值设定和驱动信号生成电路23,用于进行倾斜量的检测。 在光盘再现装置10中,激光束被光学拾取器11投射到具有其一个侧壁以预定周期摆动的记录区域的光盘上,然后基于返回光的每个摆动分量信号的振幅 通过振幅检测电路18检测激光束位于光盘的内圆侧或外圆侧的情况,并且找到各摆动分量信号的振幅的微分值 作为倾斜检测,目标值设定和驱动信号生成电路23的倾斜指示值。
    • 100. 发明授权
    • Photomagnetic recording medium and film forming method
    • 光磁记录介质和成膜方法
    • US6110610A
    • 2000-08-29
    • US871378
    • 1997-06-09
    • Goro FujitaMinehiro Tonosaki
    • Goro FujitaMinehiro Tonosaki
    • G11B7/254G11B11/105G11B5/66
    • G11B11/10586G11B11/10584G11B11/10589G11B7/254Y10S428/90
    • A magneto-optical disc in which, for preventing damage to a recording layer in case the foreign matter is sandwiched between a magnetic field modulation head and the magneto-optical disc, or the magnetic field modulation head is contacted for some reason with the magneto-optical disc, the direction of magnetization of the recording layer formed on a polycarbonate substrate, designed for transmitting the laser light, is switched by the magnetic field modulation head. The magnetic field modulation head is mounted floating in a direction opposite to the direction of incidence of the laser light from an optical head converged on an objective lens. A diamond-like carbon (DLC) protective film, composed of a thin DLC film, is provided on the surface of recording layer towards the magnetic field modulation head.
    • 一种磁光盘,其中为了防止异物夹在磁场调制头和磁光盘之间的情况下对记录层的损坏,或磁场调制头由于某些原因与磁光盘相接触, 通过磁场调制头切换设计用于透射激光的聚碳酸酯基板上形成的记录层的磁化方向。 磁场调制头被安装在与聚焦在物镜上的光学头相对的激光入射方向上浮动。 在磁记录层的表面向磁场调制头提供由薄DLC膜组成的类金刚石碳(DLC)保护膜。